clickhouse
https://github.com/yandex/clickhouse
C++
ClickHouse is a free analytic DBMS for big data.
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- Issues
- Fix `date_time_overflow_behavior` being ignored for DateTime…
- Convert existing data in Memory engine on MODIFY COLUMN
- [Draft/WIP] Add `h3PolygonToCellsExperimental` function
- FileCache use RocksDB metadata index
- Perform skip index filtering before deciding on projection selection
- Support `SIMILAR TO` pattern matching predicate
- timeSeriesPredictLinearToGrid loses predict_offset parameter in state type, crashing on AggregatingMergeTree FINAL
- Runtime filter crash on Tuple(Variant(...), ...) join key — incomplete fix for nested Variant
- `GRANT SELECT(column)` does not give access to its subcolumns
- PR's notEquals(x, getDefault()) breaks for Nullable types because getDefault() returns NULL
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